Patents by Inventor Yvonne Flohil-Janse

Yvonne Flohil-Janse has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition for laser marking
    Patent number: 5866644
    Abstract: A resin composition having laser marking properties with the CO.sub.2 laser with radiation at 10600 nm comprises a polyester thermoplastic resin, a sufficient amount of dark pigment for forming a dark background coloration, a mica material for absorbing said laser radiation, and an effective amount of a hydrated metal phosphate containing water of crystallization wherein said metal phosphate decomposes in laser struck areas to release said hydrated water whereby light colored markings in laser struck areas are obtained on said dark background coloration.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: February 2, 1999
    Assignee: General Electric Company
    Inventors: Franciscus Petrus Maria Mercx, Chris van der Weele, Yvonne Flohil-Janse